From Airbnb, to Kickstarter, to Mechanical Turk, the on-demand provisioning of workforce, services, and goods is changing the nature of work and play. In this session, we focus on exploring the challenges and opportunities with these platforms that span from the technological to the social. We will also discuss the future of crowd-based work. The session will feature a wide range of speakers involved in crowdsourcing research as well as lively discussion panels.